I see a "discussions" one time where a professor tried to explain why Twitter is actually bad for the wiring of the brain. The other guy was a self proclaimed twitter expert. Every time the professor tried to say something the twitter expert interupted him just around 500 chars. The professor eventually got angry then the twitter man said, but i already knew what you wanted to say.

Enraged the professor stood up then left the room.

I thought it was the best instance of my work here is done